Oil-burner.



Patented Aug. 24, 1915.

2 SHEETS-SHEET i.

A. W. FISCHER.

OIL BURNER. APPLICATION FILED 1ANI2.19II.

-LIIS NM SHEET z.

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ADALBERT W. FISCHER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIG-NOR TO`SCJHU'JYJTIEI ANI) KOERTING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, ACORPORATION 0F PENNSYLVANIA.

OIL-BURNER.

Specification of Letters Patent.-

lPatent-ed Ang. 24, 19115.

AppIicaton filed January 12, 1911. Serial No. 602,160.

T0 all 'whom it may concern Be it known that I, ADALBERT W. FISCHER, asubject of the Emperor of Germany, residing in the city and county ofPhiladelphia, in the State of Pennsylvania, have in- .vented a certainnew and useful Improveoil or like fuel is caused to flow by its ownhydrostatic pressure through a nozzle orice of such character that theoil or like fuel in the issuing stream is in a sprayed or atomizedcondition.

The invention consists in certain features of construction andarrangement whereby the nozzle is given the characteristic propertiesabove noted.

More specifically, the main feature vof the invention consists in aspray nozzle of novel type and adapted to cause the oil or like fiuidadmitted,'and under pressure, within the nozzle, to issue therefrom inthe form I of a flat fanlike atomized stream or jet.

The various features of novelty which characterize my invention arepointed out with particularity in the claims annexed to and forming apart of this specification.

For a better understanding of the invention, however, and the advantagespossessed by it, reference should be had to the ac companying drawingsland descriptive matter, in which I have illustrated and described formsin which the invention may be embodied.

Of the drawing, Figurevl is an elevation partly in section of a completeoil burner embodying my invention. Fig. 2 is an inverted plan, alsopartly in section, of a portion of the apparatus shown in Fig. 1. Fig. 3is an elevation of the nozzle end of the burner shown in Fig. 1. Fig. 4is a perspective view of the nozzle orifice member. Fig.

5 is a section on the line 5-5 of Fig. 6. Fig. 6is a section on the line6-6 of Fig. 5, and Fig. 7 is a partial elevation illustrating a modifiedconstruction. Fig. 8 is a plan view of a nozzle orifice member diiferingfrom that shown in Figs. 1 to 7 by the addition of a flow determiningadjunct; and Fig. l9 is a section on the line 9-9 of Fig. 8.

In the drawings, and referring first to the preferred construction shownin Figs. 1 to 6, A represents the nozzle support or base of theburnerand B represents the tubular member forming the body of the nozzleproper. As shown, the parts A and B are internally threaded at theiradjacent ends to receive the ends of a connecting nipple C. The nozzlebody B is formed with a cup shaped flange B which surrounds the adjacentend of the nozzle support A, and set screws D, passing through theflange B serve as a means for clamping the members A and B together, inany desired angular adjustment of the nozzle body B about its own axiswith respect to the support A. At its discharge end, the nozzle body Bis formed with a recess or seat B2 receiving the disk like orificemember G, and is notched at B3 to receive the positioning lugs Gextending radially from opposite sides of the member G. The member G issecured in place by a cap member F threaded on to the end of the nozzlebody B. The cap member F is formed with an enlarged central orifice F',and is cut away at F2 so as to clear the spray stream or jet issuingfrom the orifice member G. This orifice is formed in part by a slot G3which lextends into the orifice member G from its formed by a millingcutter or the like, and

it is of course immaterial which side of the member G is in, and whichside is out, and the lugs G and the notches B3 may in consequence berectangular in cross section, as shown in Figs. 1 to 6, inclusive. Whenit is desirable to insure that the member G shall always be assembledwith a particular one of its two sides out, I may make the positioninglugs G11 on the 'orifice member wedge shaped in cross section, as shownin Figs. 7 to 9, inclusive, and correspondingly shape'the notches B31 inthe margin of the recess B2 as illustrated in Fig. 7. With the burnerconstruction described it will be apparent that the means employed forconnecting the nozzle body B to the face insures tight joints, andpermits of a quick and easy adjustment of the nozzle body to bring theplane of the fluid stream or jet into the described position.

With the nozzle described, I havefound that oil or the like underpressure in the nozzle body will issue in a 'iuid fan-like stream and ina very thoroughly atomized or spray-like condition. rlhe shape of theissuing spray-like stream or jet is affected by the shape of the openslot forming the outer portion of the discharge orifice and by the shapeand disposition of the intersecting channels forming the inner portionof the orifice. In particular, a decrease in the length of the radius ofcurvature of the bottom of the slot forming the outer portion of theorice acts within limits to decrease the angular width of the fan-likestream, and a similar efect is produced by a corresponding change in theshape of the slot in the inner face of the orifice member. The channelsformed by the opposite ends of the slot in the inner faee of the orificemember tend to set up a flow of oil on the supply side of the orificeportion G4 in the direction of their lengths and this in conjunctionwith the slot-like opening forming the portion of the orifice on theoutlet side of the portion G4 contributes to the desired fan-like spraydischarge. This tendency to divide the fluid flowing on the supply sideo f the Vorifice member into separate streams may be enhanced by the useof a bridge or deector member, such as the member H of Figs. 8 and 9,arranged on the supply side of the ,orice member GA and bridging thecorresponding slot and lying directly back of the orifice portion G4. Asshown in Figs. 8 and 9 the orifice member GA is recessed to receive themember H and the latter is detachably secured in place as by screws I-IoWhile in accordance with the provisions of the statutes I haveillustrated and described the best forms of my invention now known tome, it will be apparent to those skilled in the art that certain changesin the form of the apparatus disclosed may be used without departingfrom the spirit of my invention, and, in particular, that certainfeatures of the invention may be used with advantage without acorresponding use of other features.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is- 1. A spray nozzle orifice member, havingnarrow transverse slots with curved bottoms, extending into it fromopposite sides and intersecting to form a jet orifice.

2. An oil burner having a chamber for oil under pressure, withtransverse slots having curved bottoms extending into the wall of saidchamber from its inner and outer sides and intersecting to form a jetorifice.

3. An oil burner ,comprising a base member formed with a supply passagefor oil under pressure, a tubular nozzle body connected to said basemember, and into which said passage opens, provisions whereby saidnozzle body may be secured to said base member in different angularpositions, said nozzle body being formed at `its orifice end with arecessed seat, a plate like oriice member mounted in said seat and meansfor holding said member in place, said orice member being formed withtransverse slots having curved bottoms extending into it from itsopposite sides and intersecting to form a jet orifice, and said nozzlebody and orifice member having coperative provisions for preventingrotation of the orifice member relative to the nozzle body.

4. An oil burner comprising an orice member having transverse slots withcurved bottoms formed in its opposite sides and intersecting to form ajet orifice, a nozzle body formed with a recess to receive said disk andexternally threaded at its nozzle end, and a cap member internallythreaded to receive the threaded end of the nozzle body for holding theorifice member in place, said orifice member and nozzle body havingcooperative surfaces for preventing rotation of the orifice memberrelative to the nozzle body.

5. An oil burner comprising an orice member having transverse slots withcurved bottoms formed in its opposite sides and intersecting to form ajet orifice, a nozzle body formed with a recess-to receive said disk,

and externally threaded at its nozzle end, nozzle body, and to insurethe orifice member and a cap member internally threaded to rebeing putin said recess with a particular ceive the threaded end of the nozzlebody one of its tWo sides outermost.

for holding the orifice member in place, said ADALBERT W. FISCHER. oricemember and nozzle body having co- Witnesses: operative surfaces adaptedto prevent rota- ARNOLD KA'rz,

tion of the orifice member relative to the O. STEWART.

